Question

6. A solid metallic cyclinder has its base of
diameter 42cm and it is 2m high find
the cast of poording is
cuued sulas arred
y the cost 25 paise per square cm

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Answer 1

Correct Question↷

A solid metallic cylinder has its base of diameter 42cm and it is 2m high .find

• the Cost of painting is curved surface area if it costs 25 paise per square cm

Given↷

• Radius = 21cm
• Height = 2m=200cm
• Curved surface area of cylinder = 2πrh

To Find↷

• Cost Of painting

Solution↷

$2 \times \frac{22}{7} \times 21 \times 200 \\ = 26400 {cm}^{2} \\ \sf And \: Cost \: of \: Painting = Rs.26400 \times \frac{25}{100} \\ \tt \color{cyan}= Rs.6600$